When I painted my moms car last February I bought a gallon of urethane enamel for it. This was for a 89 Dodge Daytona, I had enough paint to put on 3 coats of paint and this is a small car. With base clear you will need at least 2 quarts of base, 3 quarts would be better, and a gallon of clear should do it. Also use a good sealer tinted to the same color your car is going to be painted.